Process for producing the alloy of titanium with tin.



IINITED STATE PATENT @FFIQE.

AUGUSTE J. BOSSI, 0F NIAG ARA FALLS, NEW YORK, ASSIGNOB TO THE TITANIUMALLOY MANUFACTURING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF MAINE.

PROCESS FOR PRODUCING THE ALLOY OF TITANIUM WITH TIN.

No Drawing.

To all whom z'tmay concern:

Be itknown that I, AUGUSTE J. Rossr, a citizen of the United States, anda resident of Niagara Falls, in the county of Niagara and State of NewYork, have invented certain new and useful Improvements inProcesses forProducing the Alloy of Titanium with Tin, of which the following is aspecification.

My present invention relates to the production of said alloy by a novelmethod which, under special conditions and for special purposes,possesses advantages both in practice thereof and in resulting products.Letters Patent No. 979,394 were granted to me December 20, 1910 for amethod of producing said alloy by aid of aluminium reduction of titaniumoxid as therein described. My researches have now satisfied me that thesaid alloy may also for some purposes, notwithstanding the peculiarcharacteristics of tin, be also satisfactorily pro; duced by aid ofcarbon reduction of titanium oxid, though usually this method and itsresulting product will prove, in my opinion, less desirable than thatcovered by my aforesaid patent.

My said alloy of titanium and tin I produce by the method of my presentinvention as follows. Into an electric furnace of any of the now wellknown forms, as for example such as illustrated and described in LettersPatent No. 802,941, granted to me October 24, 1905, I charge a mixture,preferably intimate, of oxid of tin, oxid of titanium and carbon, as forinstance per the formulae To this mixture I also preferably add sometin. The current is then turned on. This, the temperature beingsufficiently raised, will result in production of a bath of molten tin,and reduction also of the titanium oxid, the titanium resulting fromwhich mingles or dissolves in said bath of tin to constitute the saidalloy. The addition of tin'in metallic state, though not absolutelynecessary, facilitates the reduction of the titanium oxid by the carbon.

Specification of Letters Patent.

Patented Apr. 9, 1912.

Application filed February 4, 1911. Serial No. 606,454.

In producing said alloy by my said process, in operations conducted onan industrial scale, it is preferable, if not indispensable, owing tothe characteristic properties of tin under the conditions mentioned, tointerpose between the atmosphere and the charge a liquid coatingcomprising molten neutral substances such as slag by superimposing andmaintaining such coating as. for example, described in my Letters PatentX0. 877,518, granted January 28,. 1908. The procedure is such that theresulting alloy usually contains some carbon, often in excess of 1%derivedfrom the electrodes of the electric furnace by the well knowncarburizing action of the are, or also due, under the conditions ofindustrial practice, to the difficulty of exactly proportioning thereducing agent so as to merely satisfy chemical aflinit-y therefor ofthe oxygen present without leaving some uncombined carbon. Thiscircumstance is of no detriment to the product for many purposes, butwill prove of advantage in certain special uses thereof.

IVhat I claim as new and desire to secure by Letters Patent is thefollowing, viz

1. The method of producing the binary alloy of titanium with tin, whichcomprises charging together oxid of tin, oxid of titanium and carbon,and raising the temperature sufliciently to produce a bath of moltentin, and reduction also of the titanium oxid, substantially asdescribed.

2. The method of producing the binary alloy of titanium with tin, whichcomprises reducing titanium oxid by carbon in a bath of molten tin,substantially as described.

3. As a new article an alloy, or compound, consisting predominantly oftitanium and tin alloyed together and containing also some carbon.

4. As a new article an alloy, or compound, consisting predominantly oftitanium and tin alloyed together and containing also carbon in excessof 1%.

WALTER D. EDMONDS, PHILIP O. PECK.

